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      10-05-2020, 05:34 PM   #6
Lord Scrip
Scrippy's Avatar

Drives: 2011 M3 Coupe
Join Date: Jan 2012
Location: LA,Ca

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2007 BMW 335i  [0.00]
Originally Posted by Cyberdemon View Post
Originally Posted by Scrippy View Post
Replace the hose. Fuel breather valve hose must be tight. Bad idle, gas mileage, possible stalls can happen.
Thanks, Atomic was able to help me out and send me a hose he hadn't used.

The Fuel breather seems fine and I'm pretty sure is routed underneath. I just replaced the fuel breather valve since I had 1 stall since I bought the car, although it was the very first fillup and hadn't happened since then, but it was easy/cheap enough while I was under there.

I suspect the leak is causing the bad idle though so hopefully a properly sealing hose will fix that.
100% any leaks will cause a problem. I just replaced my valve and rear hose because I couldn't get the old one to release. All my issues went away and I couldn't be happier. I had shitty idle randomly but especially after fill ups. I also had some stalls at red lights. All gone now